(n.) - a description for an individual who, while possessing detectable levels of genuine talent and presence, lacks the ability to transcend over other individuals of questionable artistic merit in a specific field of study or art. see Britney Spears, Madonna, Cyndi Lauper
Joni's Powerpoint presentations are always full of interesting facts and statistics that really help educate the supervisors about the corporate strategy, but are always overshadowed by Hank's presentations that are full of limited information, but include loud sounds and colorful slides that swivel around the projector. Poor Joni is the Christina Aguilera of the department.
I hate how vapid, unintelligent Carly doesn't even show up to class and is averaging a 95 A, while I've been busting my 170 IQ ass every day to earn this second-rate Christina Aguilera 86.
Used as a passive verb -
The French swimming team was really strong during the Olympic relay swim, but they Christina Aguilera-ed it and ended up with the silver medal.